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Cost of Revenues (Tables)
 12 Months Ended
Dec. 31, 2021
Cost Of Revenues [Abstract]  
Summary of Cost Revenues
The following is a summary of cost of revenues for the years ended December 31, 2019, 2020 and 2021:
 
 
  
For the year ended December 31,
 
 
  
2019
 
  
2020
 
  
2021
 
 
  
RMB
 
  
RMB
 
  
RMB
 
Revenue sharing fees
      850,167        1,031,903        1,357,270  
Salary and welfare benefits
      29,072        41,159        52,268  
Payment handling costs
      15,573        22,692        32,506  
Bandwidth costs
      5,702        11,226        30,889  
Share-based compensation expense
      —          14,789        11,484  
Others
      9,641        12,909        18,088  
    
 
 
     
 
 
     
 
 
  
Total
   
 
910,155
 
   
 
1,134,678
 
   
 
1,502,505